com.exzogeni.dk.log.formatter.SimpleLogFormatter.java Source code

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Here is the source code for com.exzogeni.dk.log.formatter.SimpleLogFormatter.java

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/*
 * Copyright (c) 2012-2014 Daniel Serdyukov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.exzogeni.dk.log.formatter;

import android.support.annotation.NonNull;

import org.apache.commons.io.IOUtils;

import java.io.BufferedWriter;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Locale;

/**
 * @author Daniel Serdyukov
 */
public class SimpleLogFormatter implements LogFormatter {

    private static StringBuilder newMessageBuilder(Thread thread, StackTraceElement caller) {
        return new StringBuilder(256).append("[").append(thread.getName()).append("]").append(" ").append(caller)
                .append(" >>>>>\n");
    }

    @Override
    public String format(@NonNull Thread thread, @NonNull StackTraceElement caller, @NonNull String format,
            Object... args) {
        final StringBuilder message = newMessageBuilder(thread, caller);
        if (args.length > 0) {
            message.append(String.format(Locale.US, format, args));
        } else {
            message.append(format);
        }
        return message.toString();
    }

    @Override
    public String format(@NonNull Thread thread, @NonNull StackTraceElement caller, @NonNull Throwable e) {
        final StringBuilder message = newMessageBuilder(thread, caller);
        final StringWriter trace = new StringWriter();
        final PrintWriter traceWriter = new PrintWriter(new BufferedWriter(trace, 512), true);
        try {
            e.printStackTrace(traceWriter);
        } finally {
            traceWriter.flush();
            IOUtils.closeQuietly(traceWriter);
        }
        return message.append(trace.toString()).toString();
    }

}